Communication Network Setting Method of Wireless Communication Terminal

1. A communication network setting method performed by a wireless communication terminal, the method comprising: reading a feature of a wireless communication signal related to at least one of a communication standard and a communication provider from a database of the wireless communication terminal; obtaining a correlation value between the feature and a wireless communication signal received at a current position of the wireless communication terminal; determining whether the feature is present in the wireless communication signal based on the correlation value; detecting, when the correlation value is greater than a threshold, the feature from the wireless communication signal; selecting a communication modem corresponding to the detected feature; and setting a communication network using the selected communication modem.

2. The method of claim 1 , wherein the reading comprises reading a feature of a wireless communication signal including a cyclic prefix, a pilot, or a preamble included in the wireless communication signal based on the communication standard or the communication provider.

3. The method of claim 1 , wherein the detecting comprises detecting a feature having a known common characteristic from the wireless communication signal based on the communication standard or the communication provider.

4. The method of claim 3 , wherein the communication standard is a wireless communications protocol, and the communication provider is an entity which provides a wireless communications service.

5. The method of claim 1 , wherein the detecting comprises performing at least one operation among a cross-correlation for detecting a recognized sequence, an auto-correlation for detecting repetitive information, and a frequency conversion for detecting a feature from a frequency domain.

6. The method of claim 1 , wherein the detecting comprises detecting the feature from the wireless communication signal by changing a frequency band or changing a channel included in the frequency band until one of features corresponding to the communication standard or the communication provider read from the database is detected in the wireless communication signal received by the wireless communication terminal.

7. The method of claim 1 , wherein the detecting comprises detecting, when a feature corresponding to the communication standard or the communication provider read from the database is not detected from the wireless communication signal received by the wireless communication terminal, the feature in the wireless communication signal by changing a frequency band or changing a channel included in the frequency band until the feature corresponding to the communication standard or the communication provider is detected, and detecting a feature corresponding to a new communication standard or communication provider when the feature is not detected from all frequency bands.

8. The method of claim 1 , wherein the selecting comprises selecting a communication modem corresponding to the communication standard or the communication provider related to the feature from a plurality of communication modems implemented through hardware, or implementing a communication modem by changing a program through software based on the communication standard or the communication provider related to the feature.

9. The method of claim 1 , wherein a feature corresponds to a characteristic that is mutually contained in each communication provider of plural communication providers, or a feature corresponds to a characteristic that is mutually contained in each communication standard of plural communication standards.

10. A wireless communication terminal performing a communication network setting method, the terminal comprising: a processing device configured to: read a feature of a wireless communication signal related to at least one of a communication standard and a communication provider from a database of the wireless communication terminal; obtain a correlation value between the feature and a wireless communication signal received at a current position of the wireless communication terminal; determine whether the feature is present in the wireless communication signal based on the correlation value; detect, when the correlation value is greater than a threshold, the feature from the wireless communication signal; select a communication modem corresponding to the detected feature; and set a communication network using the selected communication modem.

11. The terminal of claim 10 , wherein the processing device is configured to read a feature of a wireless communication signal including a cyclic prefix, a pilot, or a preamble included in the wireless communication signal based on the communication standard or the communication provider.

12. The terminal of claim 10 , wherein the processing device is configured to detect a feature having a known common characteristic from the wireless communication signal based on the communication standard or the communication provider.

13. The terminal of claim 10 , wherein the processing device is configured to perform at least one operation among a cross-correlation for detecting a recognized sequence, an auto-correlation for detecting repetitive information, and a frequency conversion for detecting a feature from a frequency domain.

14. The terminal of claim 10 , wherein the processing device is configured to detect the feature from the wireless communication signal by changing a frequency band or changing a channel included in the frequency band until one of features corresponding to the communication standard or the communication provider read from the database is detected in the wireless communication signal received by the wireless communication terminal.

15. The terminal of claim 10 , wherein when a feature corresponding to the communication standard or the communication provider read from the database is not detected from the wireless communication signal received by the wireless communication terminal, the processing device is configured to detect the feature in the wireless communication signal by changing a frequency band or changing a channel included in the frequency band until the feature corresponding to the communication standard or the communication provider is detected, and wherein when the feature is not detected from all frequency bands, the processing device is configured to detect a feature corresponding to a new communication standard or communication provider.

16. The terminal of claim 10 , wherein the processing device is configured to select a communication modem corresponding to the communication standard or the communication provider related to the feature from a plurality of communication modems implemented through hardware, or implement a communication modem by changing a program through software based on the communication standard or the communication provider related to the feature.

17. The terminal of claim 10 , wherein the processing device uses a mathematical operation performed by the communication modem to detect the feature of the wireless communication signal.

18. The terminal of claim 10 , further comprising a memory configured to store instructions, wherein the processing device is configured to execute the instructions to configure the processing device to: read the feature of a wireless communication signal related to the at least one of the communication standard and the communication provider from the database of the wireless communication terminal, and detect the feature from the wireless communication signal received at the current position of the wireless communication terminal; select, when the feature is detected from the wireless communication signal using the read feature from the database, the communication modem corresponding to the detected feature; and set the communication network using the selected communication modem.